Drybees large has a pretty generous cut. I think it only comes in velcro, but it fits my 34-pound 2 yo with lots of room to grow.

The large Drybees also fits my big 2 year old nephew. She uses Ragababe (which she isn't a huge fan - LOL), Large Drybees, and large blueberry Basix.

He has grown out of the Thirsties Duo 2 AIO, BG Large AIO, new Tot Bots AIO, BG snap Elementals - (she can still work out the fit on the old aplix BG organics that I gave her). He is 2 and 30ish lbs (closing in on 35).

Bumware makes an XL AIO but she likes encased elastic - so size wise it worked, but she didn't like the elastic.